WO2022214188A1 - Device for locking an electrical switch, and electrical switch having a device of said type - Google Patents
Device for locking an electrical switch, and electrical switch having a device of said type Download PDFInfo
- Publication number
- WO2022214188A1 WO2022214188A1 PCT/EP2021/059226 EP2021059226W WO2022214188A1 WO 2022214188 A1 WO2022214188 A1 WO 2022214188A1 EP 2021059226 W EP2021059226 W EP 2021059226W WO 2022214188 A1 WO2022214188 A1 WO 2022214188A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrical switch
- actuator
- locking
- locking element
- state
- Prior art date
Links
- 230000000903 blocking effect Effects 0.000 claims abstract description 27
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
- H01H9/286—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a removable locking part acting directly on the operating part
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
- H01H9/262—Interlocking, locking, or latching mechanisms for interlocking two or more switches using flexible transmission elements, e.g. Bowden cable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
- H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
Definitions
- the invention relates to a device for locking an electrical switch and an electrical switch with such a device.
- the main task of today's circuit breakers is the switching on or off of current and voltage from a system section, as well as the automatic tripping of the circuit breaker in the event of an overload or a short circuit.
- shackle locks can be provided for locking at the front.
- Various rear latch assemblies are also known, such as bar latches or rocker latches.
- a front latch typically blocks movement of the electrical switch handle in the ON or OFF position.
- a pin typically dips into the electrical switch from the rear and blocks the switching shaft of the switch.
- this object is achieved by the device for locking an electrical switch according to patent claim 1 .
- Advantageous configurations of the device according to the invention are specified in dependent claims 2 to 5.
- the object is also achieved according to the invention by the electrical switch according to patent claim 6 or 7's.
- Advantageous configurations of the electrical switch according to the invention are specified in dependent claims 8 to 11.
- the device for locking an electric switch comprises an actuator with a first shape and a second shape and a locking element, the actuator in its first shape moving the locking element into a blocking position for blocking the switching mechanism and thereby locking the electrical switch, the In its second configuration, the actuator moves the locking element into a release position for releasing the switching mechanism, thereby enabling a change in the state of the electrical switch, and the actuator is a shape memory alloy actuator.
- the advantage here is that the locking mechanism according to the invention can be installed in advance, for example in an electrical switch. Mutual locking of two or more electrical switches can be realized with the inventions to the invention device, the electrical switches do not have to be spatially next to each other. Furthermore, the lock can be actuated by a remote control room and to be controlled.
- the device according to the invention enables a locking device with a low structural height.
- the actuator is energized in its first form through the connecting cable, and the actuator in its second form is not energized through the connecting cable, or vice versa.
- the locking element is designed as a locking pin which is mounted in a guide and can be moved between the blocking position and the release position.
- the locking pin can undergo a linear movement in the guide between the blocking position when the locking pin is extended and the release position when the locking pin is retracted.
- the locking pin can be moved by the actuator against the force of a spring.
- the electric switch being provided with a device according to the invention, the electric switch comprising a switching shaft as part of the switching mechanism, the switching shaft being blocked by the locking element in the blocking position and thereby the electrical switch is locked, and wherein the switching shaft is released from the locking element in the release position and a change in the state of the electrical switch is thereby possible.
- the electrical switch being provided with a device according to the invention, the electrical switch comprising a handle as part of the switching mechanism, the handle being blocked by the locking element in the blocking position and thereby the electrical switch is locked, and wherein the handle of the locking element in the free is released position and thus a change in the state of the electrical switch is possible.
- the electrical switch includes a housing, with the device according to the invention being mounted on the housing of the electrical switch.
- the device according to the invention is mounted on the front or on the back of the electrical switch.
- the actuator is energized in its first shape by the connection cable, and the actuator is not energized in its second shape.
- the actuator of the electrical switch can not be energized in its first shape and can be energized in its second shape through the connection cable.
- 3A and 3B device according to the invention for locking an electrical switch in the OFF position or in the ON position, the device being in the release position by default;
- FIG. 5A and 5B actuator, locking pin in guide and spring for a standard blocked electric switch
- 6A and 6B Actuator, locking pin in guide and spring for a standard released electrical switch.
- FIG 1A shows an electrical switch 1000 with an attached U-lock locking device 2100.
- the U-lock locking device 2100 is placed around the handle 1520 of the electrical switch 1000 and locked by means of U-locks, so that the handle 1520 can no longer be operated and in is blocked from its current position.
- FIG. 1B A slide lock 2200 with two electrical switches 1000 is shown in FIG. 1B.
- the sliding lock 2200 ensures that only one of the two electrical switches 1000 can be actuated.
- Figure IC shows a Bowden cable lock 2300 mounted on an electrical switch 1000.
- the Bowden cable lock 2300 can be used to ensure that, for example, one or more other electrical switches 1000 can only be switched in a specific position of their handle 1520.
- the switch positions of the electrical switches 1000 are transmitted via the Bowden cables, thus ensuring that the handles 1520 of the electrical switches 1000 can only be actuated in special configurations.
- a rear latch assembly is shown as a bar latch 2400 in FIG.
- the switching shaft of the electrical switch 1000 can be blocked by this rod lock 2400 .
- it can thus also be ensured that adjacent electrical switches 1000 can only be switched according to a specific switching pattern.
- it can be ensured that only one of the two electrical switches 1000 can be switched on or off.
- FIG. 2A shows a device 100 for locking an electrical switch 1000 with an ON state and an OFF state for opening or closing a circuit.
- the electrical switch 1000 includes a switching mechanism 1500 for changing from the ON state to the OFF state and vice versa.
- a handle 1520 is shown as part of the switching mechanism 1500 in FIG. 2A. Using this handle 1520, the electrical switch 1000 can be switched from the OFF position, as shown in FIG. 2A, to the ON position, as shown in FIG. 2B, and vice versa.
- the device 100 is in the blocking position by default in the illustrations of FIGS. 2A and 2B for blocking the switching mechanism 1500, whereby the electrical switch 1000 is locked.
- the device 100 can be moved to a release position to release the switching mechanism 1500. This allows the state of the electrical switch to be changed. In the illustration in FIGS. 2A and 2B, this means that a locking element 120 is moved to the right and the path of movement of the handle 1520 is thus released.
- the device 100 according to the invention for locking an electrical switch 1000 is again shown in FIGS. 3A and 3B.
- this device is in the release position and can, if necessary, block the handle 1520 of the switching mechanism 1500 by moving the locking element 120 to the left as shown in FIGS. 3A and 3B.
- FIGS. 4A and 4B show rear locking of an electrical switch 1000 with the device 100 according to the invention.
- a switching shaft 1510 is located in the electrical switch 1000 as part of the switching mechanism 1500 , the movement of which can be blocked or released by the locking element 120 of the device 100 .
- the device 100 according to the invention is shown in more detail in FIGS. 5A and 5B.
- the device 100 comprises an actuator 110 with a first shape and a second shape and a locking element 120.
- the device 100 is in the blocking position for blocking the switching mechanism 1500 of the electrical switch 1000.
- the actuator 110 is in its first shape and the locking element 120 is thus in the blocking position.
- the locking element 120 is accordingly pressed by a spring 160 to the left in the direction of the blocking position as shown in FIG. 5A.
- Actuator 110 may take a second configuration, as shown in Figure 5B.
- the locking element 120 is pulled to the right by the actuator 110 as shown in Figure 5B against the force of the spring 160.
- the locking element 120 is in a release position for releasing the switching mechanism 1500 of the electrical switch 1000.
- the release position enables a change of the State of the electrical switch 1000 possible, please include.
- the actuator 110 has pulled the locking element 120 to the right, so that the locking element 120 protrudes from the guide 150 only with the length D2, which is less than the length D1.
- the actuator 110 is a shape memory alloy actuator capable of assuming a first shape and a second shape.
- Shape memory alloys have the property that they remember their original shape at a certain, higher temperature. This makes it possible to construct shape memory alloy actuators that are constrained to a different position or length at a low temperature. If these actuators are heated to this specific, higher temperature, which is set by the alloy components, these actuators suddenly resume their learned shape.
- the shape memory alloys can be heated via the environment by means of a heating element, which means indirect heating, or by current flowing through the shape memory alloy itself, which corresponds to direct heating.
- Shape memory alloy actuators can be configured as a wire that contracts at a higher temperature than metal strip that bends at higher temperatures, as a cuboid that changes its volume at higher temperatures, or as any geometry that fits perfectly into the available space and that fits into a specific, desired position at higher temperatures Direction of their expansion or their volume changes, be formed.
- the actuator 110 is designed as a wire. In its first configuration, as in Figure 5A, the wire is longer than in its second configuration, as in Figure 5B.
- connecting cables 115; 116 are provided, which make it possible to energize the actuator 110.
- the actuator 110 in its first shape can be replaced by the connection cable 115; 116 is not energized and in its second shape by the connecting cable 115; 116 are energized, as shown in Figures 5A and 5B.
- a reverse procedure is also possible, in that the actuator is energized in its first configuration and not in its second configuration.
- the actuator 110 By energizing the actuator 110 is heated directly, it is also possible that the actuator 110 by a heating element with connecting cables 115; 116 is supplied with electricity and is indirectly heated by this heating element.
- the locking element 120 can also be designed as a locking pin, which is mounted in a guide 150 and can be moved between the blocking position and the release position, as shown in FIGS. 5A and 5B.
- the locking pin undergoes a linear movement in the guide 150 between the blocking position with the locking pin extended as in FIG. 5A and the release position with the locking pin retracted as in FIG. 5B.
- An alternative embodiment of the device 100 according to the invention is shown in FIGS. 6A and 6B.
- the locking element 120 projects out of the guide 150 by the spring 160 with a length D2. If the actuator 110 now changes from the first shape to the second shape according to FIG.
- the actuator 110 is shortened and the locking element 120 is moved to the right against the force of the spring 160 according to the positions shown in FIGS. 6A and 6B.
- the locking element 120 now has a protruding length D1 and can, for example, move into the actuation path of a handle 1520 of an electrical switch 1000 and block this actuation path.
- the length Dl is greater than the length D2.
- the device according to the invention can block a switching shaft 1510 as part of the switching mechanism 1500 of an electrical switch 1000 in its blocking position or release it in its release position.
- the device 100 according to the invention can be used to block a handle 1520 as part of the switching mechanism 1500 of an electrical switch 1000 in its blocking position and to release it in the release position.
- the device 100 according to the invention can be mounted on the housing of the electrical switch 1000 .
- the device according to the invention can be mounted on the front or on the back of the electrical switch.
- the device 100 according to the invention is mounted on the rear.
- the device 100 according to the invention is mounted on the front of the electrical switch 1000's.
- connection cables 115; 116 provided for energizing and the actuator 110 can in its first shape exercise through this connection cable 115; 116 are energized and are not energized in its second shape. It is also possible that the actuator 110 is not energized in its first form and in its second form through the connection cable 115; 116 is energized.
- the actuator is energized by the connection cable in its first configuration—whereby the locking element 120 is in the blocking position—and the actuator is not energized in its second configuration, as shown in FIGS. 6A and 6B.
- the actuator of the electrical switch can not be energized in its first configuration and can be energized in its second configuration by the connection cable, as shown in FIGS. 5A and 5B.
- a mutual locking of two or more electrical's switches can be realized by the device 100 according to the invention, for example via an electrical changeover switch, which only energizes one lock and does not energize the other locks.
- the electrical switches 1000's do not have to be spatially next to one another and can nevertheless be mutually locked by the device 100 according to the invention.
- the device 100 can also be actuated and controlled, for example, by a remote control room.
- An advantage of such mutual locking achieved by means of devices 100 according to the invention is also that no additional components such as connecting rods or Bowden cables are required, which have additional tolerances and have to be adjusted by the customer.
- the device according to the invention has a lower installation height and can already be pre-installed on the electrical switch.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Lock And Its Accessories (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2021/059226 WO2022214188A1 (en) | 2021-04-08 | 2021-04-08 | Device for locking an electrical switch, and electrical switch having a device of said type |
DE112021006958.6T DE112021006958A5 (en) | 2021-04-08 | 2021-04-08 | Device for locking an electrical switch and electrical switches with such a device |
PCT/EP2021/076170 WO2022214204A1 (en) | 2021-04-08 | 2021-09-23 | Device for locking an assembly, and system for locking different assemblies |
DE112021007039.8T DE112021007039A5 (en) | 2021-04-08 | 2021-09-23 | Device for locking an assembly and system for locking different assemblies |
PCT/EP2021/076178 WO2022214205A1 (en) | 2021-04-08 | 2021-09-23 | Device for locking an assembly, electric switch having such a device, slide-in unit having such a device and drive having such a device |
DE112021006969.1T DE112021006969A5 (en) | 2021-04-08 | 2021-09-23 | Device for locking an assembly, electrical switch with such a device, drawer with such a device and drive with such a device |
CN202180096800.6A CN117121141A (en) | 2021-04-08 | 2021-09-23 | Device for locking components and system for locking different components |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2021/059226 WO2022214188A1 (en) | 2021-04-08 | 2021-04-08 | Device for locking an electrical switch, and electrical switch having a device of said type |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022214188A1 true WO2022214188A1 (en) | 2022-10-13 |
Family
ID=75690246
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2021/059226 WO2022214188A1 (en) | 2021-04-08 | 2021-04-08 | Device for locking an electrical switch, and electrical switch having a device of said type |
PCT/EP2021/076178 WO2022214205A1 (en) | 2021-04-08 | 2021-09-23 | Device for locking an assembly, electric switch having such a device, slide-in unit having such a device and drive having such a device |
PCT/EP2021/076170 WO2022214204A1 (en) | 2021-04-08 | 2021-09-23 | Device for locking an assembly, and system for locking different assemblies |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2021/076178 WO2022214205A1 (en) | 2021-04-08 | 2021-09-23 | Device for locking an assembly, electric switch having such a device, slide-in unit having such a device and drive having such a device |
PCT/EP2021/076170 WO2022214204A1 (en) | 2021-04-08 | 2021-09-23 | Device for locking an assembly, and system for locking different assemblies |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN117121141A (en) |
DE (3) | DE112021006958A5 (en) |
WO (3) | WO2022214188A1 (en) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US5043687A (en) * | 1990-09-17 | 1991-08-27 | Westinghouse Electric Corp. | Adjustable walking beam interlock mechanism |
US20060070861A1 (en) * | 2004-10-01 | 2006-04-06 | Eaton Corporation | Self retaining sliding bar interlock for circuit breaker |
DE102010025142A1 (en) * | 2010-06-25 | 2011-12-29 | FG-INNOVATION UG (haftungsbeschränkt) | Adaptive spring-, damping- or joint system for use as resetting element for shape memory actuator, has variable position element made of shape memory material, where spring, damping and joint properties of system are variable |
WO2012013180A2 (en) * | 2010-07-30 | 2012-02-02 | Kiekert Aktiengesellschaft | Actuator having a shape-memory alloy |
WO2013182791A1 (en) * | 2012-06-04 | 2013-12-12 | Centre National D'Études Spatiales C N E S | Winding actuator made of shape memory material |
US20140060036A1 (en) * | 2012-08-31 | 2014-03-06 | GM Global Technology Operations LLC | Compensating for incomplete reversal in mechanisms incorporating shape memory alloy wire |
US20140130491A1 (en) * | 2012-11-12 | 2014-05-15 | Toyota Motor Engineering & Manufacturing North America, Inc. | Shape memory alloy latch with stable on-off position |
DE102015226440A1 (en) * | 2015-12-22 | 2017-06-22 | Robert Bosch Gmbh | Hand machine tool device |
CN112038192A (en) * | 2020-09-15 | 2020-12-04 | 冯沛兴 | Interlocking structure of change-over switch |
CN112071716A (en) * | 2020-09-15 | 2020-12-11 | 佛山市博智英聚科技有限公司 | Reliable change-over switch |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1815089U (en) * | 1960-01-27 | 1960-07-21 | Licentia Gmbh | LOCKING DEVICE FOR ROTARY SWITCH. |
US5023469A (en) * | 1990-02-05 | 1991-06-11 | Zenith Controls, Inc. | Interlock system for bypass/isolation automatic transfer switch |
US8471659B1 (en) * | 2008-03-05 | 2013-06-25 | Reliance Controls Corporation | Automatic transfer switch having an interlock arrangement |
EP3089186B1 (en) * | 2015-04-30 | 2019-09-11 | General Electric Technology GmbH | Electrical switchgear and method of operating an electrical switchgear |
US10147565B2 (en) * | 2016-07-29 | 2018-12-04 | Mitsubishi Electric Power Products, Inc. | Vertical interlock system |
US10903029B2 (en) * | 2019-04-05 | 2021-01-26 | Eaton Intelligent Power Limited | Circuit breaker inerlock for arc quenching device |
-
2021
- 2021-04-08 DE DE112021006958.6T patent/DE112021006958A5/en active Pending
- 2021-04-08 WO PCT/EP2021/059226 patent/WO2022214188A1/en active Application Filing
- 2021-09-23 DE DE112021006969.1T patent/DE112021006969A5/en active Pending
- 2021-09-23 WO PCT/EP2021/076178 patent/WO2022214205A1/en active Application Filing
- 2021-09-23 WO PCT/EP2021/076170 patent/WO2022214204A1/en active Application Filing
- 2021-09-23 CN CN202180096800.6A patent/CN117121141A/en active Pending
- 2021-09-23 DE DE112021007039.8T patent/DE112021007039A5/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5043687A (en) * | 1990-09-17 | 1991-08-27 | Westinghouse Electric Corp. | Adjustable walking beam interlock mechanism |
US20060070861A1 (en) * | 2004-10-01 | 2006-04-06 | Eaton Corporation | Self retaining sliding bar interlock for circuit breaker |
DE102010025142A1 (en) * | 2010-06-25 | 2011-12-29 | FG-INNOVATION UG (haftungsbeschränkt) | Adaptive spring-, damping- or joint system for use as resetting element for shape memory actuator, has variable position element made of shape memory material, where spring, damping and joint properties of system are variable |
WO2012013180A2 (en) * | 2010-07-30 | 2012-02-02 | Kiekert Aktiengesellschaft | Actuator having a shape-memory alloy |
WO2013182791A1 (en) * | 2012-06-04 | 2013-12-12 | Centre National D'Études Spatiales C N E S | Winding actuator made of shape memory material |
US20140060036A1 (en) * | 2012-08-31 | 2014-03-06 | GM Global Technology Operations LLC | Compensating for incomplete reversal in mechanisms incorporating shape memory alloy wire |
US20140130491A1 (en) * | 2012-11-12 | 2014-05-15 | Toyota Motor Engineering & Manufacturing North America, Inc. | Shape memory alloy latch with stable on-off position |
DE102015226440A1 (en) * | 2015-12-22 | 2017-06-22 | Robert Bosch Gmbh | Hand machine tool device |
CN112038192A (en) * | 2020-09-15 | 2020-12-04 | 冯沛兴 | Interlocking structure of change-over switch |
CN112071716A (en) * | 2020-09-15 | 2020-12-11 | 佛山市博智英聚科技有限公司 | Reliable change-over switch |
Also Published As
Publication number | Publication date |
---|---|
WO2022214205A1 (en) | 2022-10-13 |
DE112021006969A5 (en) | 2023-11-16 |
WO2022214204A1 (en) | 2022-10-13 |
DE112021006958A5 (en) | 2023-11-23 |
CN117121141A (en) | 2023-11-24 |
DE112021007039A5 (en) | 2023-11-23 |
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